pooping

Hello! I don't really know how to describe this as I've never seen something like this with a rat before. My girl Turbo's poops are sort of hanging behind her, like its trailing her and she can't get it off by herself. It's hanging by something that looks stringy and thin, like hair or fur, and...

I just got him about 3 weeks ago and an odd thing I noticed was that he sleeps directly on top of the area where he poops, which is right next to his food-bowl. I replaced this corner with a make-shift litterbox (so he wouldn't have pee that I couldn't see and therefore wouldn't clean up) and he...